from tkinter import*

print ("Введите начальную координату X:")
X=int (input ())
print ("Введите начальную координату Y:")
Y=int (input ())
print ("Введите коэффицент увеличения N:")
N=int (input ())

if N==0 and X>=0 and X<=500 and Y>=0 and Y<=500 : pass
else:
    if N>0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500: pass
    else:
        if N<0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:pass
        else:
            print ("Размер фигуры превышает максимальный размер поля")
            exit ()


root=Tk ()
root.title("ИТ-Марафон")
root.geometry ("500x500")

cords=[0,0,10,0,10,10,20,10,20,20,10,20,10,30,0,30]
canvas=Canvas(bg="white", width=500 , height=500)
canvas.pack (anchor=CENTER,expand=1)
canvas.create_polygon (cords [0] *N+X, cords [1] *N+Y,
                       cords [2] *N+X, cords [3] *N+Y,
                       cords [4] *N+X, cords [5] *N+Y,
                       cords [6] *N+X, cords [7] *N+Y,
                       cords [8] *N+X, cords [9] *N+Y,
                       cords [10] *N+X, cords [11] *N+Y,
                       cords [12] *N+X, cords [13] *N+Y,
                       cords [14] *N+X, cords [15] *N+Y)

root.mainloop ()                                            
